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参数资料
型号： PT6440
厂商： Texas Instruments, Inc.
英文描述： 6A Adjustable Step-Down ISR Family
中文描述： 6A 可调节步降 ISR 系列
文件页数： 2/8页
文件大小： 178K
代理商： PT6440
For technical support and more information, see inside back cover or visit www.ti.com
PT6440 Series
6-A 5-V/3.3-V Input Adjustable
Integrated Switching Regulator
Specifications
(Unless otherwise stated, T
a
=25°C, V
in
=5V, C
in
=100μF, C
out
=330μF, and I
o
=I
o
max)
PT6440 SERIES
Typ
Characteristic
Symbol
Conditions
Min
Max
Units
Output Current
I
o
T
a
=+60°C, 200LFM
T
a
=+25°C, natural convection
Over I
o
Range
0.1
(1)
0.1
(1)
4.5
3.1
—
—
—
—
—
—
—
—
±1
±0.5
±6
±10
6
6
5.5
5.5
±2
(2)
—
±10
±25
A
Input Voltage Range
V
in
V
o
=
3.3V
V
o
≤
2.5V
VDC
Set Point Voltage Tolerance
Temperature Variation
Line Regulation
Load Regulation
Total Output Voltage Variation
V
o
tol
Reg
temp
Reg
line
Reg
load
V
o
tot
%V
o
%V
o
mV
mV
–40°
≤
T
a
≤
+85°C, I
o
=I
o
min
Over V
in
range
Over I
o
range
Includes set-point, line, load,
–40°
≤
T
a
≤
+85°C
I
o
=4A
—
±2
±3
%V
o
Efficiency
η
V
o
=3.3V
V
o
=2.5V
V
o
=2.0V
V
o
=1.8V
V
o
=1.5V
V
o
=1.2V
V
o
=1.0V
—
—
—
—
—
—
—
—
—
—
—
300
91
89
85
85
81
80
78
20
50
±70
10
350
—
—
—
—
—
—
—
—
—
—
—
400
%
V
o
Ripple (pk-pk)
Transient Response
V
r
t
tr
V
tr
I
sc
threshold
s
20MHz bandwidth
5A/μs load step, 50% to 100% I
o
max
V
o
over/undershoot
mV
pp
μs
mV
A
kHz
Short Circuit Threshold
Switching Frequency
Inhibit (Pin 1)
Input High Voltage
Input Low Voltage
Input Low Current
Standby Input Current
External Output Capacitance
External Input Capacitance
Operating Temperature Range
Storage Temperature
Reliability
Over V
in
and I
o
range
Referenced to –V
in
(pin 8)
V
IH
V
IL
I
IL
I
in
standby
C
out
C
in
T
a
T
s
MTBF
V
–0.5
–0.2
—
—
330
100
–40
(3)
–40
—
—
–0.5
+0.5
—
—
—
—
Open
(2)
+0.5
–
—
1,000
—
+85
(4)
+125
V
mA
mA
μF
μF
°C
°C
pins 1 & 5 connected
See application schematic
See application schematic
Over V
in
range
—
Per Bellcore TR-332
50% stress, T
a
=40°C, ground benign
Per Mil-Std-883D, method 2002.3,
1ms, half-sine, mounted to a fixture
Mil-Std-883D, Method 2007.2,
20-2000Hz, soldered in PCB
8.8
—
—
10
6
Hrs
Mechanical Shock
—
—
500
—
G’s
Mechanical Vibration
—
—
20
(5)
—
G’s
Weight
Flammability
Notes:
(1) The ISR will operate at no load with reduced specifications.
(2) The Inhibit control (pin 1) has an internal pull-up and if it is left open circuit the module will operate when input power is applied. The open-circuit
voltage is the input voltage V
. Use a discrete MOSFET to control the Inhibit pin, and ensure a transitioin time of less than
≤
10μs. Consult the related
application note for other interface considerations.
(3) For operation below 0°C, Cin and Cout must have stable characteristics. Use either low ESR tantalum or Oscon capacitors.
(4) See Safe Operating Area curves or contact the factory for the appropriate derating.
(5) The case pins on through-hole package types (suffixes N & A) must be soldered. For more information consult the applicable package outline drawing.
Input/Output Capacitors:
The PT6440 regulator series requires a 100μF electrolytic (or tantalum) capacitor at the input and 330μF at the output for proper
operation in all applications. In addition, the input capacitance, C
, must be rated for a minimum of 350mArms of ripple current, and the ESR of the output
capacitor, C
, must less than 100m
@100kHz. For transient or dynamic load applications additional output capacitance may be necessary. For more information
consult the related application note on capacitor recommendations.
—
—
—
23
—
grams
Materials meet UL 94V-0
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相关代理商/技术参数
参数描述
PT6441 制造商:TI 制造商全称:Texas Instruments 功能描述:6-A 5-V/3.3-V Input Adjustable Integrated Switching Regulator
PT6441A 功能描述:DC/DC转换器 3.3Vout 6A 5V-Inp Adj Step-Down ISR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸:
PT6441C 功能描述:DC/DC转换器 3.3Vout 6A 5V-Inp Adj Step-Down ISR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸:
PT6441N 功能描述:DC/DC转换器 3.3Vout 6A 5V-Inp Adj Step-Down ISR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸:
PT6442 制造商:TI 制造商全称:Texas Instruments 功能描述:6-A 5-V/3.3-V Input Adjustable Integrated Switching Regulator
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